/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlineLeaderboardInterface.h
Reads stats for a given player in the leaderboard, as well as a range of stats above and below that user. For example, if the player is 100th in the leaderboard and Range = 10, entries for ranks 90-110 will be returned.
true if the call is successful, false otherwise
bool ReadLeaderboardsAroundUser ( FUniqueNetIdRef Player, uint32 Range, [FOnlineLeaderboardReadRef](API\Plugins\OnlineSubsystem\FOnlineLeaderboardReadRef) & ReadObject )